Water-heater.



PATENTED APR. 10, 1906.

D. SHAFFER. WATER HEATER.

APPLICATION FILED JULY 16, 1904.

2 SHEETS-SHEET 1.

PATENTED APR. 10, 1906.

D. SHAPFER. WATER HEATER.

APPLICATION FILED JULY 15, 1904.

2' SHEETS-SHEET 2 DANIEL SHAFFER, OF AURORA, ILLINOIS.

WATER-HEATER.

Specification of Letters Patent.

Patented April 10, 1906.

Application filed July 15, 1904. Serial No. 216,704.

To all whom it may concern:

Be it known that I, DANIEL SHAFFER, a citizen of the United States, residing at Aurora, in the county of Kane and. State of Illinois, am the inventor of certain new and useful Improvements in Water-Heaters, of which the following is a specification.

My invention relates to that class of waterheaters having hollow studs or heating-pipes IO arranged with suitable spaces therebetween for admitting the heated air or gases for heating the water and provided with feed-pipes extending into such water-heat ng pipes.

It relates parti oularly to the means for providing the necessary area of heating-surface in the form of studs or heating-pipes closed at their lower ends and having spaces therebe-- tween for admitting heated. air or gases for heating the water and to the means for feeding thewater to be heated into suchheating-pipes or hollow studs in such a manner as to produce the desired circulation of the water and permit its expansion, due to the rising temperature, without injury to the de- 2 5 vice.

The principal object of the invention is to provide a simple, economical, and efficient water-heater.

A further object of the invention is to pro- 0 vide a water-heater having upright heatingpipes or hollow studs closed at their lower ends, with suitable means for feeding water into such pipes or hollow studs, whereby the desired area of heating-surface is afforded,

3 5 and whereby the water is fed into such pipes or hollow studs in such a manner as to per mit or cause the desired circulation of the water through the pipes and permit its expansion without injury to the device.

0 A further object of the invention is to provide simple and efficient means whereby the water may be fed into the upright heatingpipes or studs and discharged into the lower portion thereof without mingling with the 5 water discharged from the heating-pipes.

A further object of the invention is to provide a water-heater having ahot-water chamber provided with depending heating-pipes or hollow studs communicating therewith and closed at their lower ends and having a receiving-chamber separated from such hotwater chamber with means for feeding water from such receiving-chamber into the lower portion of such heating-pipes in such a manner as to produce the necessary circulation of the water in contact with a large area of heating-surface, whereby the expansion of the water is permitted without injury to the device and great economy of fuel is afforded.

Other and further objects of the invention will appear from an examination of the drawings and the following description and claims.

The invention consists in the features, combinations, and details of construction hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a longitudinal sectional elevation of a waterheater constructed in accordance with my improvements; Fig. 2, a detail view showing the arrangement of the heating-pipes or stud s and the feed-pipes extending into the same from the receiving-chamber; which is shown separated from the hotwater chamber; and gig. 3, a sectional plan view taken on line 3 of *ig. 1. a

In constructing a water-heater in accordance with my improvements I provide afurnace formed of upright side and end walls a, a suitable fire-box I), having a grate c, a back wall or bridge (1, a door 6 for receiving the fuel, an ash-panf, arranged under such iirebox, having a door g, suitable legs or supports h, a flue i, and a bafile or inner partition wall j, for diverting the heated gases or air downward after leaving the firebox. all of which may be of any ordinary and well-known type. Over this furnace I mount a boiler having an upper metallic wall 7c, outer upright Walls Z, and a lower wall m, all preferably integral. These boiler-walls are adapted to cover the space inclosed within the outer upright walls of the furnace and engage such furnace-walls so as to form, in connection with the furnace-walls, a heating-chamber a and a receiving-chamber 3.

A multiplicity of depending hollow studs in the form of metallic heating-pipes 0 are connected at suitable intervals to the lower wall m of the boiler and form the main heating-surface thereof. They are connected to the wall or body portion of the boiler by threading the upper ends of the pipes and screwing them into suitable threaded perforations in such lower boiler-wall. The upper end of each of the heating-pipes is open, so as to form an outlet 1), and the lower ends of such pipes are all closed either by means of a cap q, screwed thereon, or in any ordinary and well-known manner. A plurality of these depending pipes are made of suflicient length to extend downward, as at r, to a subbottom s of the furnace-frame or to any suitable sup- ICC IIO

port, so that they form a support for the principal portion of the weight of the entire boiler structure, with its pipes or tubes. While only two of these supporting-tubes or pipes are shown in Fig. 1, it will be readily understood that a suficient number are provided at suitable intervals and in suitable positions to support substantially the entire weight of the boiler. Tubes at the front portion of the boiler, for instance, may be elongated for this purpose. The tubes immediately over the fire-box are of course made sufliciently short to provide the desired space for the fire-box, and those back of the firebox are of suflicient length to utilize all of the available space of the portion of the heatingohamber back of the lire-box. These heating-pipes 0 are so arranged as to provide suitable spaces t therebetween for admitting the heated gases or air from the furnace, a very large heating-surface being thus afl'orded. The upper ends of these heatingpipes, which form the outlets thereof, communicate with a hot-water chamber it, having an outlet formed by walls 12, and a pipe to, such pipe being adapted to be connected with any tank, radiator, or other device in connection with which the heated water is intended to be used.

A multiplicity of feedpipes g are provided, preferably one for each of the heating-pipes or depending hollow studs 0. These feedpipes are open at both ends and form a passage 2, which communicates, through the re ceiving-chamber and main inletpipe hereinafter described, with a suitable source of water-supply. The lower end of each feed pipe or passage has an outlet 2 inside of the lower portion of the heating-pipe, so that the water is fed into the heating-pipes near theirlower ends, so that it is free to pass upward on the outside of the feed-pipes and inside the heating-pipes without mingling with the feed-water, and the feed-Water is kept entirely separate until fed to the lower ends of the heating pipes. For the sake of the manifest advantages and convenience which result from such a construction the upper ends of these feed-pipes open into a receiving-chamber 3, which is formed above the hot -water chamber between the upper wall 7c of the boiler and a preferably horizontal partitionwall l, in which the upper ends of such feed-pipes are mounted. The pipes are threaded and inserted into similarly-threaded perforations in such partitionwall for receiving them, so that they all communicate with the receiving-chamber. The main feed-pipe 5 forms the inlet for the receiving-chamber, and its passage 6 connects the passages z in the feedpipes with any suitable source of water-supply to which the main feed-pipe may be connected in any ordinary and well-known manner.

In operation the water to be heated is admitted through the main feed-pipe 6 to the excess of that, if desired. The heated water passes upward into the hot-water chamber, from which it may be drawn as desired and in which it is prevented from mingling with the feed-water, as already suggested.

The water-receiving chamber and the hotwater chamber being separated, the difierence in temperature between the waterpassing through the feed-pipes and that passing out of the heating-pipes produces a constant circulation. The water may be heated above the temperature at which steam is produced without injury to the device.

I claim 1. In an apparatus of the class described, the combination of metallic walls forming a receiving-chamber and a heating-chamber, a fire-box, a series of pipes arranged over such fire-box having closed lower ends and open upper ends communicating with the heatingchamber, a series of relatively long pipes having closed lower ends extending below the level of the lower ends of the pipes over the fire-box and forming supports for the receiving and heating chambers, and feed-pipes open at both ends and having their upper ends connected with the receiving-chamber and their lower ends extending into the closed pipes, respectively.

2. In an apparatus of the class described, the combination of metallic walls forming a receiving-chamber and a heatin chamber, a fire-box, a series of pipes arranged over such fire-box having closed lower ends and open upper ends communicating with the heatingchamber, a series of relatively long pipes having closed lower ends extending below the level of the lower ends of the pipes over the fire-box and forming supports for the receiving and heating chambers, feed-pipes open at both ends and having their upper ends connected with the receiving-chamber and their lower ends extending into the closed pipes, respectively, and a baflle arranged back of the fire-box and extending below the level of the lower ends of the pipes which are over the fire-box for diverting the heated gases from the fire-box downward to the lower portions of the relatively long pipes.

DANIEL SHAFFERa Witnesses:

FREDERICK L. WELLs, CHARLES MURPHY. 

